Re:16 Megapixels is point of diminishing returns (Score 1)

The accuracy of the human eye is such that you can only distinguish ~4000 pixels in a line while still being able to see the whole picture.

One thing I think people consistently underestimate is the subjective effect of being able to lean in to a print and see finer detail. When viewing really large prints in galleries, this is what makes them truly impressive to me.